diff --git a/drivers/usb/gadget/f_audio_source.c b/drivers/usb/gadget/f_audio_source.c
index 65760c42d422..21ced13c83d8 100644
--- a/drivers/usb/gadget/f_audio_source.c
+++ b/drivers/usb/gadget/f_audio_source.c
@@ -580,12 +580,18 @@ audio_bind(struct usb_configuration *c, struct usb_function *f)
 		goto fail;
 	ac_interface_desc.bInterfaceNumber = status;
 
+	/* AUDIO_AC_INTERFACE */
+	ac_header_desc.baInterfaceNr[0] = status;
+
 	status = usb_interface_id(c, f);
 	if (status < 0)
 		goto fail;
 	as_interface_alt_0_desc.bInterfaceNumber = status;
 	as_interface_alt_1_desc.bInterfaceNumber = status;
 
+	/* AUDIO_AS_INTERFACE */
+	ac_header_desc.baInterfaceNr[1] = status;
+
 	status = -ENODEV;
 
 	/* allocate our endpoint */